tomgagne
Abington, MA
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Joined: 10/17/2007
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Cummins Engine codes
More information from irv2
Depending on how your dash switches are set up this may help you. Basically the warning is telling you the is an out of range condition from 1 of the many sensors on the engine. I had a similar problem and was able to determine the problem and replaced a grounded out sensor.
The diagnostic codes for the ISC and ISL: ISL & ISC Codes List- Cummins ECM
To bring up active codes, use the following, which I copied from another forum:
First, look on the dash where you will find two switches. One switch is to increase/decrease engine idle speed and the other is the Check Engine Diagnostic switch.
Now, turn the ignition switch to run - DON"T START - and press the engine diagnostic switch and hold it. Now the CHECK ENG and STOP ENG lights will flash the error code and you can determine what the code is from the table.
Example the amber CHECK ENG light will flash once the red STOP ENG light will flash out the error code. For error code 123, the CHECK ENG light will flash once, followed by the STOP ENG light flashing as follows -- FLASH pause FLASH FLASH pause FLASH FLASH FLASH -- then the CHECK ENG light will flash once and the cycle will repeat.
If you have more than one error code press the IDLE INCREASE switch to
go to the next error code. ALL Inactive codes will not display. If you any inactive codes, you will need the INSITE computer to reset them All inactive codes will only show a solidly lit CHECK ENG and STOP ENG light.
Good luck
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